OAKLAND — The champagne and confetti will have to wait. The hats and t-shirts had to go back in the box. The championship party the Warriors were expecting to have Monday night was crashed by Lebron James and Kyrie Irving.

That was an epic performance. The kind of performance the Warriors needed from their star duo with Draymond Green suspended tucked away in a Oakland A’s suite.

Irving and James each scored 41 points in Game 5 of the NBA Finals. And the Warriors lost 112-97 because Stephen Curry and Klay Thompson, who combined for 62, were no match on this night.

“He was making everything,” Thompson said of Irving. “Pull-ups. Bank shots. Threes. He was making tough shots. And all the shots we were giving LeBron, he made them. Sometimes, there is nothing you can do.”

Now, it’s the Splash Brothers’ turn. The Warriors go to Cleveland for Game 6, chance No. 2 to clinch their second consecutive title. And it’s never been more clear how necessary it will be for Curry and Thompson to bring it.

They’ll have Green back for Game 6, which should help a defense that was absolutely torched. But the Warriors will be on the road. They will likely be without Andrew Bogut, their starting center who had to be helped off after injuring his left knee in a nasty collision.

And they will be facing two players who have decided they are going to try to steal this series.

This isn’t so much about depth anymore. The strength in the Warriors’ numbers didn’t look so strong as the Warriors’ bench dominance from Games 1 and 2 has faded. The supporting cast they’ve leaned on came up empty Monday. Harrison Barnes was 2-for-14 and missed a series worth of wide-open 3s. Shaun Livingston, a star earlier in the series, needed seven shots to get seven points.

Steve Kerr was grasping deep on his bench for some semblance of production on Monday. The Warriors’ reserves totaled 15 points on 5 of 20 shooting with seven turnovers.

Part of that was because Andre Iguodala, the Warriors’ super sub, was in the starting lineup in place of Green. But Kerr doesn’t have consistent places to turn and doesn’t know what he’s getting from his bench from game to game.

Even the Cavaliers have all but abandoned their bench. Kevin Love and J.R. Smith have been rendered relatively useless. All the Cavaliers have is James, Irving and Tristan Thompson.

Here is what the Cavaliers have figured out: any good games to be had by their supporting cast will be a byproduct of their stars dominating. And that truth also applies to the Warriors. It did in Game 4 in Cleveland, and it will again in Game 6.

No doubt, Game 5 showed just how invaluable Green is to the Warriors. And his return means the Warriors have their Big Three to trade blows with Cleveland’s.

The title now rests on the shoulders of Curry and Thompson, and Green. The Warriors’ stars, especially on the road, have to carry this team home.

As was the case last year, this series will come down to the Death Lineup bring death. And that requires Curry and Thompson to be grim reapers.

For a while there, it looked as if Thompson was game. He had a flurry in the second quarter, scoring 18 points, erasing defensive lapses and turnover issues so the Warriors could be tied at the half.

But in the second half, he and Curry combined for 23 points on 7-for-21 shooting. And with their stars ice cold, nothing else worked.

The Warriors were 3-for-21 from 3-point range in the second half. The Warriors shot 26.7 percent in the second half, totaling three fastbreak points.

“I thought we got a lot of good ones,” Steve Kerr said. “We had some that were rushed. … But for the most part, a lot of good looks. Sometimes they don’t go down, and that’s the way it goes. … So one of those nights. Shots didn’t go. We’ve got to play better, obviously, and I’m confident we will.”

Monday, Cleveland’s two biggest stars carried them in a game they had to have. And now, it’s the Warriors turn to be carried by their best players.

It’s going to take Curry putting relentless pressure on the defense. It’s going to take Thompson being under control and staying in his zone. It’s going to take Green being everything the Warriors missed.

This series has become about stars. The Warriors only need one big game from theirs. They do that, their champions again.